When blocks are connected in a script, they are automatically triggered one after another. If you want a block to trigger in response to client messages, put a “Waiting for a Message” block in front of it. It stops the script to wait for the client to respond.
Two directions can be output from the "Waiting for message" block. The "Did receive" direction will be triggered if the client has replied to the message. The "Did not receive" direction will be triggered if the time you set has expired and the client still has not responded.
Leave the value "0" if you want the message to wait indefinitely. Nothing will happen if the client does not respond. The chat will remain at this step until you manually restart it with the /clearall command.
Video tutorial
If you still have questions, we have prepared a video tutorial on the Message Waiting block.